/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements. See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.inlong.manager.common.util;

import com.google.common.collect.Lists;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;

import java.util.Map;
import java.util.function.Function;

/**
 * Inlong collection util test.
 */
public class InlongCollectionUtilsTest {

    @Test
    public void transformToImmutableMap() {
        Map<String, String> emptyMap =
                InlongCollectionUtils.transformToImmutableMap(null, Function.identity(), Function.identity());
        Assertions.assertTrue(emptyMap.isEmpty());

        Map<String, Integer> stringIntegerMap =
                InlongCollectionUtils.transformToImmutableMap(Lists.newArrayList("1", "2", "3"),
                        Function.identity(), Integer::valueOf);
        Assertions.assertEquals(1, (int) stringIntegerMap.get("1"));

    }
}